<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div>
    <h1>登录页面</h1>
    <input type="text" v-model="user.username" placeholder="用户名">
    <input type="password" v-model="user.password" placeholder="密码">
    <input type="button" value="登录" @click="login()">
</div>
<script src="https://cdn.bootcdn.net/ajax/libs/axios/0.21.1/axios.min.js"></script>
<script src="https://cdn.staticfile.org/vue/2.6.14/vue.min.js"></script>
<script>
  let v = new Vue({
    el:"body>div",
    data:{
        user:{username:"",password:""},
    },
    methods:{
        login(){
            axios.post("/login",v.user).then(function (response) {
                if(response.data==1){
                   alert("登录成功!");
                   location.href="/";
                }else if(response.data==2){
                    alert("密码错误");
                }else{
                    alert("用户名不存在");
                }
            })
        }
    }
  })
</script>
</body>
</html>